1299848531881 has 9 divisors (see below), whose sum is σ = 1307870237149. Its totient is φ = 1291875749644.

The previous prime is 1299848531867. The next prime is 1299848531909. The reversal of 1299848531881 is 1881358489921.

The square root of 1299848531881 is 1140109.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1299848531881 - 2⁷ = 1299848531753 is a prime.

It is a super-2 number, since 2×1299848531881² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1299848531081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 190394790 + ... + 190401616.

Almost surely, 2^{1299848531881} is an apocalyptic number.

1299848531881 is the 1140109-th square number.

1299848531881 is the 570055-th centered octagonal number.

It is an amenable number.

1299848531881 is a deficient number, since it is larger than the sum of its proper divisors (8021705268).

1299848531881 is an frugal number, since it uses more digits than its factorization.

1299848531881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13988 (or 6994 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 67.

The spelling of 1299848531881 in words is "one trillion, two hundred ninety-nine billion, eight hundred forty-eight million, five hundred thirty-one thousand, eight hundred eighty-one".